Road-machine.



R. R.,HART & I. N. DE HART.

ROAD MACHINE. APPLICATION FILED JAN. I2, I9I7.

Patented Apr. 23,19%.

3 SHEEIsesHEET l.

R. R. HART L l. N. DE HART.

ROAD MACHINE.

APPLICATION FILED JAN. 1.2. 1917.

3 SHEETS-SHEET 2.

WITH/8858 R. R, HART & I. N. DE HART.

ROAD MACHINE.

APPLICATION FILED JAN. l2, 19l7.

3 SHEETS-SHEET 3.

.Patented Apr. 23, 1918.

MHAMGH@ y I/I//T/VESSES A TTOR/I/EI/S ROY El. HARTAND ISAAC N. DE HART, OF TULARJE, CALIFORNIA.

' ROAD-MACHINE.

rechace.

Specification of Letters Patent.

Patented Apr.. 23, 191A..

To all whom t may concern:

Be it known that we, ROY R. HART and ISAAC N. DE HART, citizens of the United States, and residents of rlulare, in the county of Tulare and State of California, have invented certain new and useful lfmprovements in Road-Machines, of which the following is a specification.

Our invention relates to road' making or road repair, and the main object thereof is to provide a machine which will cut a rough surface and reduce the same to mulsh, which will carry the mulsh from the edge to the crown of the road, leveling high spots and filling low spots, and which will then smooth the mulsh 'so leveled.

Our invention provides an element including a plurality of specially arranged cutter" disks arranged in front and rear sets angularly and oppositely arranged to chop up a surface regardless of its character, the front set tending to carry the soil outwardly of the median line of the machine and the rear set reversing this soil movement, with the result that the surface of the road is reduced to a mulsh.

A second element, automatically rotatable.,l then harrows the mulsh and produces a leveled surface from the edge of the road to its crown, and a third element then packs and smooths the leveled mulsh, this third element also being automatically rotatable and of a readily controllable weight, and all of said elements being readily adiusted with res ect to the surface ofthe roadvto meet di erent conditions, and being vertically movable out of operative positions.

Our invention alsol contemplates a e'A culiar arrangement of the rst element with respect to the frame of the machine whereby said element follows the line of draft and carries the drivers seat with it so that the driver is always facing the line of draft.

Our invention also contemplates the provision of an adjustable weight for the second and third elements ,whereby a desired downward or gravity effect will result upon said elements, said weights being readily shifted from one side ofthe machine to the other in order to adapt the latter for operation upon either side of a road, and the teeth which we provide Yin the second element niaybe vertically adjusted in order to carry a larger or lesser amount of the mulsh to the crown of the road, as will hereinafter appear, as

well as other details of the structure, advantages'and manner vof operation, etc.

Our invention is fully described in the following specication, of which the accompanying drawings form a part, in which like characters refer to like parts ineach of the views, and in Whichz- 4Figure l is a side elevation of a machine embodying our invention in preferred form, and in operative position;

Fig. 2 is a plan view of the frame and the parts thereunder, the parts thereover being omitted for clearness of illustration yof the operating elements;

Fig. 3 is an enlarged detached view of a structural detail;

Fig. 4 is a section taken on the line fir- 4 of Fig. 3.

Fig. 5 is a sectional view taken on the line `5 5 ofFig. 2;

Fig. 6 is a detached plan view of the cutter element with the disk cutters shown in section;

Fig. 7 is a perspective view of the means for raising and lowering said cutter element so as to clear the road, as in transporta* tion or in making a sharp turn, and in forcing the cutter disks into the road to chop up the surface of the latter;

Fig. 8 is a section taken on the line 8-8 of Fig. 2;

Fig. 9 is an enlarged fragmentary section taken on the line 9-9 .of Fig. 2; and

Fig. 10 is a section taken on the line ici-1o of Fig. 9.

Referring to the drawings, 11 represents a frame mounted upon front andvrear wheels 12. and 13, respectively, said frame being arched at its forward end and carried by .a turn-table in order to permit short turns of the front wheels, a supplemental frame la being carried by the front axle 15 and in 'turn carries a drivers seat 16, the latter moving with the front wheels whereby the driver always faces the line of draft.

Pivoted to each side of the supplemental frame 14 are two toggle levers 17 in turn pivoted at their lower ends to the respective sides of a cutter frame 18 adapted to be vertically moved by said toggle levers through the medium of a lever 19 1n operative connection with a bar 20 pivoted to extensions 21 of the toggle levers at one side of the machine, a toothed sector 22 being provided for locking the hand lever 19 in any desired position in the usual manner, and said cutterframe is moved along the line of draft by means of draw-bars 23 pivoted to the supplemental frame 14, Figs. 1, 6 and 7n Carried in suitable bearings in the cutter frame, at the forward end thereof, are shafts 24 and 25 carrying cutter disks 26 and 27, respectively, of dished form having their concaved sides outwardly faced, the innermost disk 26 being staggered with respect to the vdisk v27 and both being extended beyond the median line of the frame whereby cutter operation is assured for the entire width of the cutter frame, the tendency of the cutter disks 26 and 27 being to cut into the surface ofthe ground, chop up the soil, and move the chopped soil outwardly toward both sides of the frame 18.

The shafts 24 and 25 are inwardly and rearwardly inclined and, to the rear thereof, are two similar shafts 28 and 29 outwardly and rearwardly inclined and provided with dished cutter disks 30 and 31, respectively, with their concave faces toward the median line of said frame 18, the disks 30 being staggered with respect to the disks 26 and the disks 31 staggered with respect to the disks 27 whereby the entire surface of the ground traversed will be acted on by said disks, and the tendency of the disks 30 and 31 is to move the chopped soil toward the median line of the frame 18 and to aid in reducing the same into mulsh.

By means of the hand lever 19 the driver may raise the cutter disks out of ground engaging position or he may force the same downwardly to insure positive digging into the ground, or any positions therebetween, according to requirements.

To the rear of the arch in the main frame 11 is a hanger 32 having an arcuate slot therein in which a rod 33 is vertically movable by means of a bell-crank lever 34 and a hand lever 35 adapted to be adjustably locked to a suitable toothed sector, said rod being passed through a ball head 36 on Ythe forward end of a draw-bar 37 bifurcated at 38 and extended rearwardly and upwardly and again rearwardly at 39 and provided with a roller 40 slidable vertically in a slotted guide 41, said draw-bar 37 being movable vertically by means of a bell-crank 42 and a hand lever 43 adapted to be adjustably locked to a suitable sector, the hand levers 35 and 43 being adjacent a platform 44 provided for an operator.

The draw-bar 37 carries a vertical shaft 45 serving as a pivot for a casting 46 having an extension 47 provided with suitable holes for adjustably securing a weight 48, as by a screw 49, Fig. 5,-said casting 46 having an upwardly directed member 50 arranged on the axis of the shaft 45 and provided with one member 'of a universal joint 51 the other Lac-agees member of which is carried by a telescopic rod 52 connected, by means of a universal joint 53, with a rod 54 journaled in a suitable bearing and rotatable by means of a crank handle 55 adapted te be locked in adjusted position on a suitable sector and, by operating said handle toward either sido of the normally central position thereof, the weight 48 is moved correspondingly toward either side of the normally central position thereof.

The shaft 45 carries a hub 56 at its lower end having radial spokes 57 terminated in a circular rim 58, said rim and spokes being provided with a plurality of vertically adjustable teeth 59, one manner of adjustably holding said teeth being shown in Figs. 9 and 10 and comprises forming the rim and spokes of channel metal, providing saw-teeth on one side of each tooth 59, and providing clamps 60 held in place by bolts 61, but we do not confine ourselves to this specific structure.

In operation, the weight 48 is swung throughan arc of ninety degrees of a circle toward the edge of the road being repaired or built, with the result that the teeth 59 on this side of the harrow formed by the spokes, rim, and teeth, are sunk into the ground and cause the harrow to revolve in the forward movement of the machine, the ball-head 36 and roller 40 permitting this movement of the harrow on an axis longitudinal of the machine, and the soil cut up by the cutter disks is ground up and, because of the spokes, is carried from the edge of the road toward the crown thereof, regardless of the character of the soil, or of grass or of weeds or of other matter, and the roadway is leveled by this rotary harrow movement inasmuch as the spokes 57 will cut off high spots and fill in low spots.

The adjustment of the weight 48 tends to determine the degree of displacement of the harrow from a`horizontal plane, but this is also under the control of the adjusted length of the teeth 59 inasmuch as, with short teeth, the outer side of the harrow will be lower than with long teeth with the same weight adjustment and, with short teeth in such weight adjustment, the spokes at the outer side of the harrow are lower and carry more soil in the harrow rotation toward the crown of the road.

Vertically slidable in a slot in the guide 41 is a ball head 62 on a draw-bar 63 and vertically adjustable by means of a bell-crank 64 and hand lever 65 adapted to be adjustably locked to a suitable sector, said drawbar being bifurcated at 66 and provided with a rearward extension 67 vertically movable in a slotted guide 68, and being vertically adjustable by means of a bell-crank 69 and hand lever 7 O adapted to be adjustably locked to a suitable sector.

CTX

hanane rfhe draw-bar 63 is provided with a vertical shaft 71 serving as a pivot for a casting 7 2, having a weight adjustable along an eX- tension 73 thereof, shown at 74, and having an upwardV extension 75 joined, by means of a universal joint l76, with a telescopic rod 77 in turn joined, by means of a universal joint 78, with a rod 79 journaled in suitable bearings and provided'with a crank handle 8O adapted .to be locked in. adjusted positions to a suitable sector, this permitting movement of the weight to either side of the machine in the manner already described with reference to the weight 4:8, and the draw-bar 63 may rock on a longitudinal axis as described with reference to the drawbar 37 'llhe shaft 71 carries a smoother 81 formed, in the form illustrated, of a hub 82, a circular sheet 83, an inclined rim 84, and a plurality of spaced teeth 85 arranged in a circle of a relatively short radius having the axis of the shaft 71 as its center, these teeth 85 acting in the manner of the teeth 59 to turn the smoother on its axis or, rather, the axis of the shaft 71.

The smoother is made with an open top, as shown, whereby stones, dirt, or other weighty material may be placed therein in order to obtain a desired pressure upon the leveled mulsh to pack the same and provide a smooth surface to the roadway.

Our machine is well adapted forl leveling old and worn roads, especially oiled roads, and includes all the needed treatments from cutting up to smoothing and a roadway may be cambered in any desired degree by means of the adjustable weights, and 'by the adjustable teeth 59, every portion of the surface of the road to be repaired being cut by the staggered 'cutter disks, the lumps of earth being moved outwardly of the median line of the machine by one set of cutters and again inwardly by the other set and chopped up in the meanwhile to form mulsh, this being afterward ground up and spread by the harrow previous to smoothing.

Dur invention is entirely practical, highly eflicient, of relatively great capacity for work, adjustable to meet different condil tions, and comparatively inexpensive, and, while we have shown a preferred embodiment, changes may be made thereover provided such changes come within the scopeof the appended claims.

Having fully described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. A road machine, comprising means for chopping up the ground, said means first movingthe ground outwardly and -then inwardly toward the center of the road, means in rear of the first means for pulverizing. and leveling the ground, means in rear of the pulverizing and leveling means for packing and smoothing the ground, and means for tilting the pulverizing and leveling and packing and' smoothing means `to enable them to follow the contour of the road formed by the chopping means.

2. A road machine, comprising a plurality of sets of .dished cutting disks angularly arranged and staggered with respect to each other, a weight controlled toothed frame in rear of the cutting disks, means for tilting said frame, a weight controlled packing and smoothing board-in rear of the toothed member, means for tilting said board..

3. A road machine, comprising a frame, Wheels therefor, a supplemental frame, a cutter framecarried thereby, a plurality of sets of a plurality of dished disks angularly arranged with respect to said cutter frame and staggered with respect to each other, a harrow, and a smoother.

LA road machine, comprisingl a frame, wheels therefor, a supplemental frame, a cutter frame in adjustable relationship therewith, a plurality of sets of a plurality of dished disks angularly arranged with respect tosaid cutter frame' and staggered with respect to each other, a harrow, and a smoother.

5. A road machine, comprising a frame, wheels therefor, a cutter frame, a plurality of sets of a plurality of dished disks angularly arranged -in said cutter frame, the concaved faces of oney set being directed outwardly of the median line of said machine and the concavedfaces of the'other set being directed toward said median line, and the disks of one set being staggered with respect to the disks of the other set, a harrow, and a smoother.

6. In a road machine, a frame, a support mounted in the frame to tilt on a longitudinal axis, a harrow mounted to revolve in the support, and means for tilting the support.

7. In a road machine, a'frame, a support mounted in the frame to tilt on a longitudinal axis, a swin ing weight' mounted in the support, means or swinging the weight and thereby tilt the support and a revoluble harrow mounted in the support.

8. A road machine, comprising a frame, plowing means at the forward end thereof, a vertically movable draw-bar, a vertical shaft therein, a wheel at the lower end thereof, vertically adjustable teeth in the spokes and rim' of said wheel, means for depressing either side of said wheel whereby the lower teeth will cause said `wheel to revolve to harrow the earth and carry the same-toward the opposite side of said machine, and a smoother at the rear of said machine.

9. A road machine, comprising a. frame,

`plowingmeans at the forward end thereof,

aslotted hanger, a draw-bar vertically and rotatably movable therein, an extension on the rear of said draw-bar, a guide therefor asl lll)

iat

permitting vertical and rotary movement thereof, a revolving harrow carried by said draw-bar, means for depressing either side ofsaid harrow, and a smoother at vthe rear of said machine.

10. A road machine, comprising a frame, plowing means at the forward end thereof, a bifurcated draw-bar vertically and rotatably mounted in said frame, a harrow rotatable on said draw-bar, a casting pivoted to said draw-bar having an extension a weight adjustable on said extension, means for swinging saidl casting on its pivot to either side of said ha-rrow to depress the respective side of the latter, and a smoother at the rear of said machine.

11. A road machine, comprising a frame, plowing means at the forward end thereof, an automatically revolved harrow intermediate the length thereof, an automatically revolved smoother at the rear thereof, and means for depressing either side of said smoother.

12. A road machine, comprising a frame, plowing means at the forward end thereof. an automatically revolved harrow intermediate the length thereof, a vertically and rotatably mounted draw-bar at the rear thereof, a revolving smoother carried by said draw-bar, and means for revolving said smoother.

13. A road machine, comprising a frame,

plowing means at the forward end thereof,

an automatically revolved harrow intermediate the length thereof, a vertically and rotatably mounted draw-bar at the rear thereof, a revolving smoother carried b said draw-bar, teeth on the under side of7 said smoother, and means for depressing one side of said smoother to cause said teeth to revolve said smoother.

14. In a road machine, a frame, a revolving smoother, a support therefor rotatable on a longitudinal axis, a casting pivotally mounted on said support, and means on said casting for depressing either side of said smoother out of normal horizontal plane.

15. In a road machine, a frame, a revolving smoother, teeth thereunder, a support therefor rotatable on a longitudinal axis, a casting pivotally mounted on said support,

thereon,

Leccese a weight adjustable on said casting, and means for swinging said weight to one side of said smoother to depress the same to cause the teeth on such side to revolve said smoother.

16. In a road machine, a frame, a draw bar having its front end pivoted to the frame and its rear end working in a guide carried by the frame, a revoluble member mounted on the lower sideof the draw bar for acting upon the ground, and means for adjustingthe draw bar.

17. In a road machine, a frame, having a hanger and guide arranged one in front of the other, a draw bar pivoted to the hanger and having a member working in said guide, a revoluble member mounted on the lower side of the draw bar for acting upon the ground, an adjustable weight on the draw bar, and means for adjusting the draw bar.

18. In a road machine, a frame having a hanger and a guide one in front of the other, a draw bar pivoted to the hanger and having a member working in the guide, a revoluble member mounted on the lower side of the draw bar for acting upon the ground, a pivoted member on the draw bar and carrying an adjustable weight, and means for adjusting the draw bar.

19. In a road machine, a frame having a hanger and guide arranged one in front of the other, a draw bar pivoted t0 the hanger, and having a member working in the guide, a vertical shaft mounted in the draw bar, a wheel like member on the lower end of the shaft, for acting upon the ground, a member mounted on the shaft and carrying an adjustable weight, and means for adjusting the draw bar.

20. In a road machine, a frame, a draw bar having its front end. adjustably pivoted to the frame and its rear end working in a guide carried by the frame, a vertical shaft mounted in the draw bar, a wheel like member mounted on the lower end of the shaft, a member mounted to swing on the said shaft and carrying a weight, and means for swinging the said member.

.ROY R. HART. ISAAC N. DE HART. 

